The respec thing is a quick and kludgy workaround for not being able to make a custom party in single player. Because otherwise it makes zero sense for Larian to spend how many man hours writing and designing their awful Origin characters, just to throw their hands up and go nah forget story/dialogue just make them whatever you want then guys. If they would fix the actual underlying problem correctly instead of quick and dirty, then perhaps people wouldn't be so stuck on keeping it so easy to do.